A List.Accumulate question.... (I think)

[Netrelemo]

I have two columns, and I want transform them as follows:

Col1   Col2   

123    A

123    B

123    C

45     H 

45     K

45     L

Becomes

Col1    Col2

123     A,B,C

45      H,K,L

I think List.Accumulate is the right tool, but I cant quite see how to use it. 

[v-angzheng-msft]

Hi, @Netrelemo 

Thank you for sharing😀

Could you please mark your post as Answered since it is working now? It will help the others in the community find the solution easily if they face the same problem with you. Thank you.

Best Regards,
Community Support Team _ Zeon Zheng

[Netrelemo · Accepted solution]

Ha! Solved it. 

Thanks to this post: 

https://gorilla.bi/power-query/aggregate-text-values/

Table.Group with a nested Text.Combine